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YOUR RESEARCH997 GT3 Front Brake Ducts and CG Lock installed
Leading reported evidence
Install another cg
Performed · outcome unconfirmed
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Performed · outcome unconfirmed · Original poster
To help me get used to it, I installed another CG on my DD.
Leading evidence: 'Install another cg' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install another cg' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Performed · outcome unconfirmed
Just from the one quick results someone posted the rotor on the 997 gt3 brake duct ran +5 degrees hotter then the base 996/986 duct on a base Boxster.
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Performed · outcome unconfirmed
I'm curious is anyone here has actually tested anything with a digital heat sensor(like Ray S was referring to)
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Suggestion · Original poster
While putting in PFC 97s and changing the oil this weekend, I finally got around to installing some other parts that have been sitting in my garage for a bit.
Run +5 degrees warmer...........perhaps the 986 rotors were too small
Suggestion or failed attempt
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Suggestion
A member on PPBB ran a 997 gt3 brake duct on one side on a (base) 986 and left a 986/996 brake duct on the other side.......the rotor w/ the 997 gt3 brake duct ran +5 degrees warmer...........perhaps the 986 rotors were too small to benefit from the larger duct?!
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Suggestion · Original poster
While putting in PFC 97s and changing the oil this weekend, I finally got around to installing some other parts that have been sitting in my garage for a bit.
Run +5 degrees warmer...........perhaps the 986 rotors were too small
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
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Suggestion
A member on PPBB ran a 997 gt3 brake duct on one side on a (base) 986 and left a 986/996 brake duct on the other side.......the rotor w/ the 997 gt3 brake duct ran +5 degrees warmer...........perhaps the 986 rotors were too small to benefit from the larger duct?!
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Suggestion
A member on PPBB ran a 997 gt3 brake duct on one side on a (base) 986 and left a 986/996 brake duct on the other side.......the rotor w/ the 997 gt3 brake duct ran +5 degrees warmer...........perhaps the 986 rotors were too small to benefit from the larger duct?!
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Suggestion
Well It doesn't make any sense if the 986 that is running the gt3 duct on one side is having higher temps recorded then standard the duct on the other side.
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32 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Outcome without a verified action link
I'm still getting used to the CGs but I like them so far.
While putting in PFC 97s and changing the oil this weekend, I finally got around to installing some other parts that have been sitting in my garage for a bit. I installed a set of 997GT3 front brake ducts and a CG Lock. There is a huge difference in size between the old and new brake ducts and it was a quick replacement. The the CG Lock was also a quick install. It does appear to really hold me in a lot better with it secured than without it. I can't comment on benefits until I get the out to track/AX but from the looks of it these parts are pretty good bang for the dollar (ducts $8.34 each and the CG lock $35 from a Rennlister).
Ironically I just put those very same ducts on my car this weekend as well. we'll see how much of an improvement there is on Thursday...or if they get knocked off before I even get to the track
As for the CG lock...wife bought me one last year and I have to say after using it I have grown to dislike it quite a bit with power seats. With it's design you can only lock the lap portion of your belt...but if you do the whole move-the-seat-back-and-recline, lock the belt manually, and then move-the-seat-bac-into-position trick (didn't know how to better describe it sorry!) you'll pull yourself back into the locked belt and have a locked shoulder and lap restraint.
However, my brother who has fully manual seats found the manual way too hard and has since adopted my CG lock and really enjoys it.
Andy
I have the ducts on as well. They scrape more then my front spoiler does.
I also have power seats and use the same trick as
AudiOn19s explained. It works great though if you don't have power seats the CG lock would be easier.
I wanted the cup ones originally, but the price was much more that $10.
I'll see how the regular GT3 ones hold up first. If they actually last, I may try the cup ones next
I'm still getting used to the CGs but I like them so far. I don't move my 996 at all and just loosen up the CG before locking the seat belt down. I tighten up the lap part down afterward. To help me get used to it, I installed another CG on my DD.
I don't have the part number off hand but Jeff at Sunset Imports can hook you up. He had the best price that I could find. I'll see if I can post the part number for you later tonight.
Just ordered the 997 GT3 non cup version.
P/N 997-341-48392 left side
P/N 997-341-48492 right side
First had them look at the 996 GT3 ducts and the pair was $190.
the 997 ones are the cheap ones...the 996 standard units are still really expensive. The pricing makes no sense really...none of them should cost as much as they do other than the 997 GT3 units. I think I paid $18.00 for the pair through even my local dealer.
already 1 step ahead ... I've got one set on the car, and 2 spare sets for unforseen "off track" incidents ... fortunately I've yet to need the extra, but at this price, they are one of the cheapest track and brake improvements you can do ...
A member on PPBB ran a 997 gt3 brake duct on one side on a (base) 986 and left a 986/996 brake duct on the other side.......the rotor w/ the 997 gt3 brake duct ran +5 degrees warmer...........perhaps the 986 rotors were too small to benefit from the larger duct?!
Has anyone actually measured the temp. of their brakes w/ the 997 gt3 brake duct on one side and the 996 on the other?
That would make sense. I noticed that the 997 duct is not that much larger but it is shaped differently. This funnels the air into a direction towards the brakes. The position of the brake ducts may not be the same on a 986 as it is on a 997 so it actually could be funneling the air into the wrong area which would then mean you will actually have higher temps.
So even if the are the 996 and 986 part numbers are the same doesn't mean that they are in the exact same location as each other. I wouldn't know unless you have wind tunnel stats.
I am not saying that even for a 996 that the 997 gt3 ducts are properly aligned. It would be a great if some one could measure the temps for each and post the data.
Aren't they on the same location on the 996 c2 as they are on the 986? Aren't the front 1/2 of the cars the same sans brake caliper,rotor & pad set up?
Yes they are. These devices are extremely simple. They just collect air flowing under the car at speed and direct it toward the brakes.
The larger ducts simply collect more air than the smaller ones. The 986 ducts are the same as the 996 ducts because the front of these cars and the front suspension and braking systems are all very similar. I really don't see how the smaller ducts could perform better. If they did, why would Porsche waste time and effort creating the bigger models?
That makes absolutely no sense, IMHO.
Well It doesn't make any sense if the 986 that is running the gt3 duct on one side is having higher temps recorded then standard the duct on the other side. My only explanation would be that the gt3 ducts have to be directing the air into the wrong place or that the temp readings are wrong.
Larger yes, but the profile on these seems (at least from the pictures provided thus far) different and would channel the air to different spots? Like a fan that is pointed in not quite the right spot... Might be good to get some top-down photos to see where the air is directed.
A few comments;
- The pictures I posted were for 996 brake ducts, but the post that refers to a temperature difference claims use of a 997 duct. I have not seen that duct so it's hard to comment on it's use in a 996 or 986 (whose front suspensions and brakes are very similar).
- If you have ever measured the temps Porsche brake rotors achieve on a track you'll know they get big time hot (I measure my tire and brake temps with a digital heat sensor with a laser sight). 5 degrees difference from one side to the other is a very small variation. I have seen much larger variations caused by the orientation of the track (depending on if it has mostly right turns, mostly left turns, how fast each of the respective corners are, and how long the straight is between turns, how long each corner is, etc). All of these previously mentioned factors could play a roll in brake temps. As a result it is hard to draw conclusions from a mere 5 degree difference without more info.
- When I looked at the ducts in my cars (I have used all three in my cars at various times) they all appear to direct air to about the same location. Which makes a lot of sense since Porsche obviously tested them before they created the (very expensive) injection molding "tools".
Yes this is exactly what I'm referring to....
Just from the one quick results someone posted the rotor on the 997 gt3 brake duct ran +5 degrees hotter then the base 996/986 duct on a base Boxster.
That was just one case. Just from what I've seen(although it was a controlled repeated study) it didn't look great.
I'm curious is anyone here has actually tested anything with a digital heat sensor(like Ray S was referring to)
Trust me,I want this to work as much as everyone else. Come on improved braking capabilities for $20? How can someone pass that up?
